İkinci El Airsoft

A Türkiye-focused marketplace with human moderation, seller verification, listing and order state machines and an append-only ledger. Built security-first: payment activation is gated behind real provider contracts.

The Problem

Airsoft gear is regulated and second-hand trading happens in unmoderated social groups with no buyer protection.

The Solution

A dedicated marketplace with verification, moderation queues and auditable order flows from day one.

What I Built

• →Listings with image processing
• →Moderation queue and admin tools
• →Listing and order state machines
• →Database-level financial constraints

Highlights

• →Human listing moderation
• →18+ seller verification
• →Append-only financial ledger

Outcome

• →Live and self-hosted with PostgreSQL and Redis
• →Security model documented and enforced in migrations